<template>
  <div>
    <el-form :rules="rules"
             :model="loginForm"
             v-loading="loading"
             element-loading-text="正在登录..."
             element-loading-spinner="el-icon-loading"
             element-loading-background="rgba(0, 0, 0, 0.8)"
             ref="loginForm"
             class="loginContainer">
      <h3 class="loginTitle">系统登录</h3>
      <el-form-item prop="username">
        <el-input type="text" v-model="loginForm.username" auto-complete="false" placeholder="请输入用户名"></el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input type="password" auto-complete="false" v-model="loginForm.password" placeholder="请输入密码">
        </el-input>
      </el-form-item>
      <el-form-item prop="code">
        <el-input size="normal" type="text" v-model="loginForm.code"
                  @keydown.native.enter="submitLogin()"
                  auto-complete="false"
                  placeholder="点击图片更换验证码" style="width:230px;margin-right: 5px"></el-input>
        <img :src="captchaUrl" @click="updateCaptcha()">
      </el-form-item>
      <el-checkbox class="loginRemember" v-model="checked">记住我</el-checkbox>
      <el-button type="primary" style="width: 100%"@click="submitLogin()">登录</el-button>
    </el-form>
  </div>
</template>

<script>


export default {
name: "Login",
  data(){
    return {
      captchaUrl: '/captcha?time='+new Date(),
      loginForm: {
        username: 'admin',
        password: '123',
        code: ''
      },
      loading:false,
      checked: true,
      rules: {
        username: [{
          required: true, message: '请输入用户名', trigger:
              'blur'
        }],
        password: [{
          required: true, message: '请输入密码', trigger:
              'blur'
        }],
        code: [{
          required: true, message: '请输入验证码', trigger:
              'blur'
        }]

      },
    }
},
  methods:{
    //更换验证码
    updateCaptcha(){
      this.captchaUrl='/captcha?time='+new Date();
    },
    //登录按钮
    submitLogin(){
      this.$refs.loginForm.validate((valid) => {
        if (valid) {
          this.loading=true
          // alert('submit!');
          this.postRequest('/login',this.loginForm).then(resp=>{
            if (resp){
              this.loading=false;
              // alert(JSON.stringify(resp))
              //存储用户的token
              const tokenStr = resp.obj.tokenHead+resp.obj.token;
              console.log(tokenStr+"测试")
              window.sessionStorage.setItem('tokenStr',tokenStr);
              //页面跳转
              let path = this.$route.query.redirect;
              this.$router.replace((path=='/'||path==undefined)?'/home':path)
            }
          })
        } else {
          console.log('error submit!!');
          this.$message.error("登录失败")
          return false;
        }
      });
    }
  }
}
</script>

<style scoped>
.loginContainer{
  border-radius: 15px;
  background-clip: padding-box;
  margin: 180px auto;
  width: 350px;
  padding: 15px 35px 15px 35px;
  background: #fff;
  border: 1px solid #eaeaea;
  box-shadow: 0 0 25px #cac6c6;
}
.loginTitle{
  margin: 0px auto 40px auto;
     text-align: center;
  color: #505458;
}
.loginRemember {
     text-align: left;
     margin: 0px 0px 15px 0px;
   }
 
 .el-form-item__content{
     display: flex;
     align-items: center;
   }

</style>